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The diameter of the screw is 15-1/2 feet, length of screw in the line of the shaft, 3 feet 2 inches, and the pitch of the screw, 19 feet. Q. What do you mean by the pitch of the screw?

From 1850 to 1861 there were treated without cold water, at the hospital at Kiel, 330 cases of typhoid fever, with 51 deaths a mortality of about 15-1/2 per cent.; from 1863 to 1866, 160 cases were treated with cold baths, with 5 deaths a mortality of only 3-1/10 per cent.

The Nid two rods killed in one day 19 fish; largest fish, 38 pounds. The following records are from Canadian rivers prior to 1871: Moisie two rods in twenty-five days, 318 fish; average 15-1/7 pounds; three largest, 29, 29 and 32 pounds. Godbout three rods in forty days, 194 fish; average, 11-1/8 pounds; three largest, 18, 19 and 20 pounds. St.

The brickmakers of Mossoul go through the same process to this day. As soon as the clay was sufficiently kneaded, it was shaped in almost square moulds. In size these moulds surpassed even those of Egypt: their surfaces were from 15-1/4 to 15-1/2 inches square, and their thickness was from 2 to 4 inches.

Even in the years of plenty not more than one-half of what the Act of Union proposed could be squeezed out of the country, and the balance, which was added to her debt, raised the ratio which it bore to that of Great Britain from the proportion of 1 to 15-1/2 in 1800 to that of 2 to 17 in 1817.

Q. What are the dimensions of the air pump? A. The air pump, which is set in the centre of the condenser, is 15-1/4 inches in diameter, and has a stroke of 11 inches.

The internal diameter of the steam pipe is 13 inches; diameter of steam trunnion journal 25 inches; diameter of eduction trunnion journal 25 inches; thickness of metal of trunnions 2-1/4 inches; length of trunnion bearings 11 inches; projection of cylinder jacket, 8 inches; depth of packing space in trunnions, 10 inches; width of packing space in trunnions, or space round the pipes, 1-1/2 inch; diameter of crank pin 10-1/4 inches; length of bearing of crank pin 15-1/2, inches.

In hockey, as in many other games, the whole object is to drive the puck into your opponents' goal and to prevent them from driving it into yours. Almost any number of boys can play hockey, but a modern team consists of five players. Hockey skates are of special construction with long flat blades attached to the shoes. The standard length of blade is from 14-1/2 to 15-1/2 inches.

A. It has not been found to be so. A chimney of three or four times its own diameter in height appears to answer fully as well as a longer one; and it was found that when in an engine with 17 inch cylinders a chimney of 15-1/4 inches was substituted for a chimney of 17-1/2 inches, a superior performance was the result.

At any moment therefore, the depth of water can be determined by observing the tapes. There is now only 15-1/2 feet on the bar, so it is necessary to lighten the Leopoldville still more before it will be possible to cross. Thus early one of the chief difficulties in the Congo the transport of goods is demonstrated.